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TI-2026-74032 Aliases CVE-2026-77572

Missing authorization in VeraCrypt driver exposes disk metadata

Priority LOW 15CWE-200Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

VeraCrypt through 1.26.29 on Windows has missing authorization checks in selected metadata IOCTL handlers of the veracrypt.sys driver. The handlers accept caller-supplied object-manager and device paths broader than VeraCrypt workflows need, which exposes sensitive information (CWE-200). A local user who can open the user-accessible VeraCrypt device can disclose drive-letter symlink targets, partition information, disk geometry, and limited object-manager path metadata.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

VeraCrypt provides disk encryption with strong security based on TrueCrypt. In 1.26.29 and earlier, selected metadata IOCTL handlers in the VeraCrypt Windows veracrypt.sys driver accept caller-supplied object-manager and device paths broader than supported VeraCrypt workflows require. A local user who can open the intentionally user-accessible \.\VeraCrypt device can use TC_IOCTL_GET_RESOLVED_SYMLINK, TC_IOCTL_GET_DRIVE_PARTITION_INFO, VC_IOCTL_GET_DRIVE_GEOMETRY_EX, or the legacy TC_IOCTL_GET_DRIVE_GEOMETRY handler to make src/Driver/Ntdriver.c perform kernel-context symbolic-link or disk-device lookups outside the intended path scope. This can disclose low-sensitivity drive-letter targets, partition information, disk geometry, GPT or MBR state, and limited object-manager path metadata.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00096 0th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
veracryptVeraCryptup to 1.26.29—No fix listedCNA
  • VeraCrypt Vendorveracrypt Affected up to 1.26.29 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for VeraCrypt.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-77572
  2. 2026-10-16 CISA SSVC decision points changed
  3. 2026-11-07 Affected versions changed · Red Hat

References

Other 3

  • TI-2026-38769 VeraCryp: wolfCrypt backend bypasses VeraCrypt PBKDF2 iteration count (non-default WOLFCRYPT=1 builds) CVSS 3.1MEDIUM 6.2
  • TI-2026-39004 VeraCrypt: Hidden volume quick format weakens plausible deniability CVSS 4.0MEDIUM 4.6
  • TI-2026-85262 Heap overflow and out-of-bounds read in VeraCrypt deserialization CVSS 4.0HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences